<template>
  <!-- 搜索工作栏 -->
  <ContentWrap>
    <el-form
      class="-mb-15px"
      :model="queryParams"
      ref="queryFormRef"
      :inline="true"
      label-width="68px"
    >
<!--      <el-form-item label="类目名称" prop="name">-->
<!--        <el-input-->
<!--          v-model="queryParams.name"-->
<!--          placeholder="请输入类目名称"-->
<!--          clearable-->
<!--          @keyup.enter="handleQuery"-->
<!--          class="!w-240px"-->
<!--        />-->
<!--      </el-form-item>-->
      <el-form-item>
<!--        <el-button @click="handleQuery"><Icon icon="ep:search" class="mr-5px" /> 搜索</el-button>-->
<!--        <el-button @click="resetQuery"><Icon icon="ep:refresh" class="mr-5px" /> 重置</el-button>-->
        <el-button
          type="primary"
          plain
          @click="openForm('create')"
        >
          <Icon icon="ep:plus" class="mr-5px" /> 新增
        </el-button>
        <el-button type="danger" plain @click="toggleExpandAll">
          <Icon icon="ep:sort" class="mr-5px" /> 展开/折叠
        </el-button>
      </el-form-item>
    </el-form>
  </ContentWrap>

  <!-- 列表 -->
  <ContentWrap>
    <el-table
      v-loading="loading"
      :data="list"
      row-key="id"
      :default-expand-all="isExpandAll"
      v-if="refreshTable"
      :tree-props="{ children: 'childrenCategory' }"
    >
      <el-table-column prop="id" label="类目ID" width="200" />
      <el-table-column prop="categoryName" label="类目名称" />
      <el-table-column prop="categoryIcon" label="图标" align="center">
        <template #default="scope">
          <div v-if="scope.row.categoryIcon" class="category-icon-wrapper" @click="imagePreview(scope.row.categoryIcon)">
            <el-image
              :src="scope.row.categoryIcon"
              class="category-icon-image"
              fit="contain"
            />
          </div>
          <span v-else>-</span>
        </template>
      </el-table-column>
      <el-table-column prop="courseCount" label="关联课程数" width="100" align="center" />
      <el-table-column prop="sortOrder" label="前端排序" width="100" align="center" />
      <el-table-column label="操作" align="center" width="160">
        <template #default="scope">
          <el-button
            link
            type="primary"
            @click="openForm('update', scope.row.id)"
          >
            编辑
          </el-button>
          <el-button
            link
            type="danger"
            @click="handleDelete(scope.row.id)"
          >
            删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>
  </ContentWrap>

  <!-- 表单弹窗：添加/修改 -->
  <CategoryForm ref="formRef" :categoryList="list" @success="getList" />
</template>

<script lang="ts" setup>
import { Icon } from '@/components/Icon'
import { getCategoryList, deleteCategory } from '@/api/course/category'
import CategoryForm from '../category/CategoryForm.vue'
import { createImageViewer } from '@/components/ImageViewer'

defineOptions({ name: 'CourseCategory' })

const message = useMessage() // 消息弹窗
const { t } = useI18n() // 国际化

const loading = ref(true) // 列表的加载中
const list = ref([]) // 列表的数据
const queryParams = reactive({
  name: undefined
})
const queryFormRef = ref() // 搜索的表单
const isExpandAll = ref(true) // 是否展开，默认全部展开
const refreshTable = ref(true) // 重新渲染表格状态

/** 查询课程分类列表 */
const getList = async () => {
  loading.value = true
  try {
    const res = await getCategoryList({ name: queryParams.name })
    console.log('API返回数据:', res)
    list.value = res.list
  } catch (error) {
    console.error('获取课程类目列表失败', error)
    list.value = []
  } finally {
    loading.value = false
  }
}

/** 展开/折叠操作 */
const toggleExpandAll = () => {
  refreshTable.value = false
  isExpandAll.value = !isExpandAll.value
  nextTick(() => {
    refreshTable.value = true
  })
}

/** 搜索按钮操作 */
const handleQuery = () => {
  getList()
}

/** 重置按钮操作 */
const resetQuery = () => {
  queryFormRef.value.resetFields()
  handleQuery()
}

/** 添加/修改操作 */
const formRef = ref()
const openForm = (type: string, id?: number | string, parentId?: number | string) => {
  formRef.value.open(type, id, parentId)
}

/** 删除按钮操作 */
const handleDelete = async (id: number | string) => {
  try {
    // 删除的二次确认
    await message.delConfirm()
    // 调用删除API
    await deleteCategory(id as number)
    message.success(t('common.delSuccess'))
    // 刷新列表
    await getList()
  } catch {}
}

/** 图片预览 */
const imagePreview = (imgUrl: string) => {
  if (!imgUrl) return
  createImageViewer({
    urlList: [imgUrl],
    zIndex: 9999999
  })
}

/** 初始化 **/
onMounted(() => {
  getList()
})
</script>

<style scoped>
.category-icon-wrapper {
  width: 40px;
  height: 40px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin: 0 auto;
  border-radius: 4px;
  border: 1px solid #ebeef5;
}

.category-icon-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
</style>
